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Table 3 Comparison of refractive outcomes of intraocular lens power calculation using the three devices in SRK/T formula

From: Accuracy of swept-source optical coherence tomography based biometry for intraocular lens power calculation: a retrospective cross–sectional study

  Group A (n = 128) Group B (n = 36)
SS–OCT biometer PCI A–scan US SS–OCT biometer A–scan US
Optimized constant 118.02 118.04 117.90 118.02 117.90
PE (D) 0.00 ± 0.44 0.00 ± 0.46 −0.02 ± 0.61 0.00 ± 0.47 −0.01 ± 0.66
MAE (D) 0.36 ± 0.27 0.39 ± 0.30 0.47 ± 0.39 0.36 ± 0.31 0.64 ± 0.36
pvalue 0.027* p < .001
MedAE (D) 0.31 0.32 0.40 0.32 0.60
Eye within (%)
  ≤ ±0.25 D 41.44 42.97 36.72 47.22 22.22
  ≤ ±0.50 D 71.09 67.19 60.16 72.22 47.22
  ≤ ±1.00 D 95.31 95.31 90.63 94.44 83.33
  1. Values are presented as mean ± standard deviation
  2. Group A; PCI feasible, Group B; PCI unfeasible
  3. D diopters, PE prediction error, MAE mean absolute error, MedAE median absolute error, SS-OCT swept-source optical coherence tomography, PCI partial coherence interferometry, US ultrasonography
  4. *pvalue is for KruskalWallis test
  5. Same letters indicate no statistical significance based on Bonferroni’s method
  6. ††pvalue is for Wilcoxon signed rank test
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